wet behind the ears

all ears

Listening intently; fully focused.

all eyes and ears

Very attentive.

all wet

Utterly incorrect; erroneous; uninformed.

are your ears burning

Asked of somebody who was not present but was the topic of discussion.

beat someone round the ears

To beat (a person) with blows about the head.

believe one's ears

To believe that something which one hears is truly the case.

box someone's ears

To slap someone on the side of the head, usually as an informal punishment.

burn someone's ears

To cause blushing of someone's ears due to strong embarrassment.